generator keeps returning the same value

Question

I am stuck on this one piece of code because I can\'t get the generator to return me a the next value every time its called – it just stays on the first one! Take a look:

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Answer 1

Each time you call ArrayCoords(20,20) it returns a new generator object, different to the generator objects returned every other time you call ArrayCoords(20,20). To get the behaviour you want, you need to save the generator:

>>> coords = ArrayCoords(20,20)
>>> next(coords)
(0, 0)
>>> next(coords)
(0, 1)
>>> next(coords)
(0, 2)